﻿using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Security.Principal;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
using System.Web.Security;
using Yala.Client.Web.MVC.Models;
using Yala.Core.Authentication;
using Yala.Models.AuthProviders;
using Yala.Models.UserProfiles;
using Yala.Models.Users;
using Yala.Core.Domain;

namespace Yala.Client.Web.MVC.Controllers {
    public class AccountController : Controller {

        public IFormsAuthenticationService FormsService { get; set; }
        public IMembershipService MembershipService { get; set; }

        private readonly IUsersRepository _usersRepo;
        private readonly IUserProfilesRepository _userProfilesRepo;

        public AccountController(IUsersRepository usersRepo,
                                IUserProfilesRepository userProfilesRepo,
                            IFormsAuthentication formsAuthentication) {
            _usersRepo = usersRepo;
            _userProfilesRepo = userProfilesRepo;

        }

        public AccountController() {
            _usersRepo = null;
            _userProfilesRepo = null;

        }

        protected override void Initialize(RequestContext requestContext) {
            if (FormsService == null) { FormsService = new FormsAuthenticationService(); }
            if (MembershipService == null) { MembershipService = new AccountMembershipService(); }

            base.Initialize(requestContext);
        }

        // **************************************
        // URL: /Account/LogOn
        // **************************************

        public ActionResult LogOn() {
            return View();
        }

        [HttpPost]
        public ActionResult LogOn(LogOnModel model, string returnUrl) {
            if (ModelState.IsValid) {
                if (MembershipService.ValidateUser(model.UserName, model.Password)) {
                    FormsService.SignIn(model.UserName, model.RememberMe);
                    if (Url.IsLocalUrl(returnUrl)) {
                        return Redirect(returnUrl);
                    } else {
                        return RedirectToAction("Index", "Home");
                    }
                } else {
                    ModelState.AddModelError("", "The user name or password provided is incorrect.");
                }
            }

            // If we got this far, something failed, redisplay form
            return View(model);
        }

        // **************************************
        // URL: /Account/LogOff
        // **************************************

        public ActionResult LogOff() {
            FormsService.SignOut();

            return RedirectToAction("Index", "Home");
        }

        // **************************************
        // URL: /Account/Profile
        // **************************************

        [Authorize]
        public ActionResult Profile() {
            Guid userID = ((CustomPrincipal)HttpContext.User).UserID;

            var user = _usersRepo.Single(x => x.Id == userID);

            if (user != null) {
                return View(user);
            }
            return View();
        }

        [HttpPost]
        [Authorize]
        public ActionResult Profile(User model) {
            Guid userID = new Guid();

            if (HttpContext.Request.IsAuthenticated) {
                userID = ((CustomPrincipal)HttpContext.User).UserID;
            }

            var user = _usersRepo.Single(x => x.Id == userID);
            if (user != null) {
                user.FirstName = model.FirstName;
                user.MiddleName = model.MiddleName;
                user.LastName = model.LastName;
                user.Email = model.Email;
                user.Username = model.Username;

                _usersRepo.Update(user);
            }

            _usersRepo.CommitChanges();

            return View(model);
        }

        // **************************************
        // URL: /Account/Register
        // **************************************

        public ActionResult Register() {
            ViewBag.PasswordLength = MembershipService.MinPasswordLength;
            return View();
        }

        [HttpPost]
        public ActionResult Register(RegisterModel model) {
            if (ModelState.IsValid) {
                // Attempt to register the user
                MembershipCreateStatus createStatus = MembershipService.CreateUser(model.UserName, model.Password, model.Email);

                if (createStatus == MembershipCreateStatus.Success) {
                    FormsService.SignIn(model.UserName, false /* createPersistentCookie */);
                    return RedirectToAction("Index", "Home");
                } else {
                    ModelState.AddModelError("", AccountValidation.ErrorCodeToString(createStatus));
                }
            }

            // If we got this far, something failed, redisplay form
            ViewBag.PasswordLength = MembershipService.MinPasswordLength;
            return View(model);
        }

        // **************************************
        // URL: /Account/ChangePassword
        // **************************************

        [Authorize]
        public ActionResult ChangePassword() {
            ViewBag.PasswordLength = MembershipService.MinPasswordLength;
            return View();
        }

        [Authorize]
        [HttpPost]
        public ActionResult ChangePassword(ChangePasswordModel model) {
            if (ModelState.IsValid) {
                if (MembershipService.ChangePassword(User.Identity.Name, model.OldPassword, model.NewPassword)) {
                    return RedirectToAction("ChangePasswordSuccess");
                } else {
                    ModelState.AddModelError("", "The current password is incorrect or the new password is invalid.");
                }
            }

            // If we got this far, something failed, redisplay form
            ViewBag.PasswordLength = MembershipService.MinPasswordLength;
            return View(model);
        }

        // **************************************
        // URL: /Account/ChangePasswordSuccess
        // **************************************

        public ActionResult ChangePasswordSuccess() {
            return View();
        }

    }
}
